chess-The Oxford Companion to Chess - First Edition by David Hooper & Kenneth Whyld

in the second world war and in 1949 he bccamc
prolessor of clcctronics al Southanplon univeEity,
the first such chair in this ountry .nd PerhaPs in
the world. (The departnenr is sdll housed in rhe
zepler Building.) Kracmcr rcmained in cei,nany
but u.til his death he aod Zepler naintained a
clo$ friendship. They published /u ,arze ld
schachptobt.rc (t951). a.otlecrion ol their con
posaions. and P.obl.ntlar ih 20. .lahfiuhd.
(1957), which contaias shar rhey resarded as the
best problems ol the 20rh cenlury.
HW7&% 'w % 7*.
A problem by Zeple. that won thnd p zc in a
lourney held in honoui otlhe Geman composer
F.iedrich Martin Palitzsch (1889-1912) in i932:
rwo tnes lead lo stalenaie: 1Rbs? Nb4+ 2Rxb4
andl Od6Nel 2 Rd8 Nd3 3 Oxd3. The solulion
shows a lorn ofrlRrcN DousrNcr 1Od8 Nel 2
Rd7 N.l3 3 Rxd3 Kc2 4 R.3.
ZEPLDR DOUBLINC, a probleE nananv.er a
piccc is movcdalolg aline acioss a square m vhich
aseco.dline-piece of like movemcntis moled: the
liBi piee to be noled, supportedbylhesecond, is
then moled in the sa6e direction asit was moved
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aazAa 345
This zero posilion troo the cNrs BoNoNr€ MS.
may have bccn uscd for vageBr awhitc king is to
beplacedon theboard. Thesolverisaskedtofi nda
nrte in two with WKa3. Wben he disovers or is
shown the solution, I Rl7+ Nxtl 2 NC6, the white
king is placcd o. g5i he may or may not rcc that
there is no mate in two because White would be in
chect alter I Rfl+ Nxr+ The white king is lhen
placed on h6, and he nay then overlook rhe
diflcrcnl male in 1wo by 1 RxgT
ZIGZAG. . FArRv RonrFM in which rhe norm"l
alternation ot moves nay be suspended: White
makes thestipularcd numbcrolmoves- but Blact
nay nns one or more turns lo playi White may
n.ithcr check (unle$ giving nate) nor caprurei
mate isno.mal, i.c. rArRy MAt is nohequired. The
tom oI the problem may bc Dm.o MATE or
In a chc.king zigag Black cannot move unless
he gives check, bui must eive check iI he cao and
may chooe it he h s a. option. In a capturing
zigzag Black cannot nole unless he caplures, bur
must caplurc ifhc ca, and maychoose ifhe has a.
opdon. There are lwo kinds oI capturing zigzag:
blackcap, inrhichBlackcapruresonlyotre nan on
his turn loplayi and nadcap, in which Black must
captu.e in su@cssile sinAle noles by one man as
many men as he can. but may givc check orny on
the last ot his single-moves.
'lnc zigzag, a kind oislRrEs MoIER. was named
in 1892 bv thc SFnish conposer Jos6 Tolosa y
Careras (l8,laFl916). About rscnty years l.ter
DAwsoN outlined the standard lo.os givcn here.
Tbe pioneer problem by ZE?LER, tlanburger
Colesponddt. 1.r9. 1 &b4 Be? 2Rgb2Bxc3 l
Rb8.
ZDRO-POSITION, aposition thar isnota problem
hul to which slighl changes or additioni may be
made. in difrere.t qays, to provide two or more